Well, that seems to be more or less what happens, except that there are no male Kangaskhan, which would mean that actual Kangaskhan eggs are a weird anomaly that only ever happen with hybrids, and most of them just clone themselves ad infinitum. They’re just… kind of a strange species.
Perhaps something along the lines of telescoping generations in aphids? Some species reproduce asexually as well as sexually- females are born pregnant with a genetically identical daughter, and that unborn daughter is already developing a daughter of her own. When mating with males, they lay eggs which can hatch into either males or females. Maybe each newly hatched Kangaskid is already parthenogenically pregnant and gives birth when she becomes Kangaskhan offscreen.
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